import java.util.*;
import java.lang.*;
import java.io.*;

// The main method must be in a class named "Main".
class Main {
    public static void main(String[] args) {
        // Set lowLimit and highLimit
        Long lowLimit = 1L;
        Long highLimit = 15L;
        
        // Create a list to store the result i.e total number of ways to choose sum so that max possible participants win the lottery and the number of winners
        List<Long> finalResult = new ArrayList<>();
    
        // Create a HashMap to store the number of times each sum appears
        Map<Long,Long> map = new HashMap<>();
        
        // Loop through the lowLimit and highLimit to get the List of Sum of digits of each number
        for (Long i = lowLimit; i <= highLimit; i++) {
            // Create a Long j to store current sumber i as we need to move to the next number in nex iteration 
            Long j = i;

            // Create a Long sum to store the sum of current number
            Long sum = 0L;

            // To get each digit, loop through and divide the number by 10 and the remainder is the digit. Sum the digit to get the sum of all digits
            while (j != 0) {
               sum = sum + j % 10;
               j /= 10L;
            }

            // Check the map keys to see if the sum exists, if exists, add 1 to the value. Else create a new key to store the sum and set 1 as the value 
            if(map.containsKey(sum)) {
                map.put(sum, map.get(sum) + 1L);
            }else {
                map.put(sum, 1L);
            }
        }
        System.out.println("Map: " + map);
    
        // The max number of winners will be the maximum value in the map
        Long winners = Collections.max(map.values());
        System.out.println("Maximum Number of winners: " + winners);
    
        // To get the number of ways to win, count the number of keys that have the maximum values in the map
        Long ways = 0L;
        for (Long sum : map.values()) {
            if(Objects.equals(sum, winners)){
                ways++;
            }
        }
        System.out.println("Number of ways to win: " + ways);
    
        finalResult.add(ways);
        finalResult.add(winners);
    
        System.out.println("Result: " + finalResult);
    }
}

Embed on website

To embed this project on your website, copy the following code and paste it into your website's HTML: